Main Reaction: Indole + L-Serine >> L-Tryprophan

Reference: PubMed ID: 14657405
Authors: Yamazaki Y, Kitajima M, Arita M, Takayama H, Sudo H, Yamazaki M, Aimi N, Saito K
Title: Biosynthesis of camptothecin. In silico and in vivo tracer study from [1-13C]glucose.
Published: 2004 Jan

Indole + L-Serine --> L-Tryprophan